United States Department of the Interior

Geological Survey

Analyses and descriptions of

rock and nonmagnetic panned concentrate samples,

Lewiston and Portland 1x2 degree quadrangles,

north-central New Hampshire

E. F. Cooley, R. H. Hill, L. J. Cox, T. L. Cheatham,

J. A. Domenico, J. R. Eckert, and D. Kay

Open-file Report 84-888

1984

This report is preliminary and has not been reviewed for conformity with

U.S. Geological Survey editorial standards or for stratigraphic nomenclature. Contents Page Abstract 1 Introduction - 1 Rock Sample Descriptions 2 Analytical Techniques for Table 1 and Table 2 19 Explanation of Table 1 and Table 2 20 Explanation of Table 3 21 References cited 38

Tables

Table 1. Analyses of rock samples by semi-quantitative spectre-

graphic analysis and atomic absorption 22

Table 2. Analyses of panned concentrates by semi-quantitative

spectrographic analysis 36

Table 3.-- Analyses of rock samples by EDS-XRF 37 Abstract

Semiquantitative emission spectrographic analyses for 31 elements on

236 rock samples and 14 panned concentrates collected within the Lewiston and Portland 1° x 2° degree quadrangles of north-central New Hampshire are reported here in detail. Atomic-absorption spectrometric analyses for tin on 236 rock samples and quantitative energy-dispersive x-ray fluorescence spectrometric analyses for 10 trace elements on 23 rock samples are also reported. Latitude and longitude for all samples are given along with brief descriptions of the rock samples. Rocks analyzed include igneous rocks and quartz veins from the Jurassic White Mountain Plutonic-Volcanic

Suite and rocks, dikes, and quartz veins from the surrounding Paleozoic terrane. Introduction The analyses reported here are on 259 rock and vein samples and 14 concentrated stream sediment samples collected within the Lewiston and Portland 1° x 2° quadrangles of north-central New Hampshire. The samples were collected as one of several multi-disciplinary studies associated with the Conterminus U.S. Mineral Appraisal Program (CUSMAP) conducted in the Lewiston 1° x 2° quadrangle. The samples were collected during 1983 by Leslie Cox, Terri Cheatham, and Debby Kay of the U.S. Geological Survey. A section of brief rock sample descriptions precedes 3 tables of analyses. Tables 1 and 2 list the semiquantatitive emission spectrographic analyses for 236 rocks (Table 1) and 14 panned concentrates (Table 2). Table 1 also lists atomic absorption spectrometric analyses for tin for 236 rocks. Table 3 lists quantitative analyses on 23 rocks by energy dispersive x-ray fluorescence spectrometry (EDS-XRF). The rock samples were collected to delineate with greater certainty the boundaries of tin resource potential (Moench, Canney, and Gazdik, 1983) in the areas centering on the White Mountain Batholith and for further study on the possible bedrock sources contributing to the tin values reported in stream sediment and non-magnetic heavy mineral concentrate samples collected in surveys conducted within CUSMAP and overlapping Wilderness and Roadless Areas of the White Mountain National Forest, New Hampshire (Domenico, 1982; Canney and others (in press), and Sabin and others, 1982). Rock Sample Descriptions The rocks collected are predominately from the Jurassic White Mountain Plutonic-Volcanic Suite (WMP-VS). Fewer than 20% of the rocks are from the surrounding Paleozoic terrane. The sampling strategy reflects a greater interest in the younger rocks about which lies a geochemical tin anomaly (Moench and others, 1983). The older rocks were generally collected where outcrop was found downstream from the contact with intruding rock of the WMP-VS. An exception is the series of quartz vein and host rock collected in Beaver Brook in the Mt. Moosilauke quadrangle, where there is no adjacent outcrop of a member of the WMP-VS. Each sample is a single rock collected from outcrop unless otherwise noted in the description. The Paleozoic rocks are identified by age, forma­ tion name, and quadrangle location. Rock names for the Mesozoic WMP-VS are unspecified but briefly described by rock type, texture, and visible alteration where present except for the Conway granite, Mount Osceloa granite, and the Moat Volcanics. The term Conway granite is used in place of description for pink bio- tite granites, medium- to coarse-grained equigranular in texture. In this report the term Conway granite also includes the Black Cap granite. The term Mount Osceola granite is used in place of description for greenish gray to pink hornblende and hornblende-biotite granite. In places the

Mount Osceola granite is difficult to distinguish from Conway granite by visual examination. These samples are queried (?). The Moat Volcanics include basalt and rhyolite flows of variable texture and composition and are briefly described. Field number Sample description 83TM001 Porphyritic Conway granite. Rusty. 83TM002 Porphyritic Conway granite. 83TM003 Porphyritic Conway granite. 83TM004 Medium- to fine-grained felsic vein cuts Conway granite. 83TM005 Conway granite. 83TM006 Subporphyritic Conway granite. 83TM006B Basic aphanitic dike cuts Conway granite. 83TM007 Porphyritic Conway granite. 83TM008 Porphyritic Conway granite. 83TM009 Conway granite. 83TM010 Porphyritic Conway granite. 83TM011 Conway granite. 83TM012A Mica schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM012B High grade schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM012C High grade schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM013A Altered Conway granite. 83TM013B Conway granite. 83TM013C Subporphyritic Conway granite. 83TM014 Porphyritic Conway granite. 83TM015 Porphyritic Conway granite. 83TM017A Porphyritic Conway granite. 83TM017B Dark aphanitic dike cuts Conway granite. 83TM018 Altered Subporphyritic Conway granite. 83TM019 Porphyritic Conway granite. Field number Sample description 83TM020A Mica schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM020B Migmatite. Devonian Littleton Formation injected by Kinsman quartz monzonite. Plymouth quadrangle. 83TM021 Mica schit. Devonian Littleton Formation. Plymouth quadrangle. 83TM022 Porphyritic Conway granite. 83TM023 Porphyritic Conway granite. 83TM024A Altered porphyritic Conway granite cut by quartz veins. 83TM024B Altered Conway granite. 83TM025 Porphyritic Conway granite. 83TM026 Subporphyritic Conway granite. 83TM027 Porphyritic Conway granite. 83TM028 Schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM029 Conway granite. 83TM030 Schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM031A Altered(?), foliated, Devonian Kinsman quartz monzonite. Plymouth quadrangle. 83TM031B Altered, foliated, Devonian Kinsman quartz monzonite. Plymouth quadrangle. 83TM032 Subporphyritic Conway granite. 83TM033 High grade schist. Devonian Littleton Formation. Plymouth quadrangle. 83TM034 Porphyritic Conway granite. 83TM035A Fine- to medium-grained felsic dike cuts Conway granite. 83TM035B Altered Conway granite. 83TM035C Porphyritic Conway granite. Field number Sample description 83TM036 Replicate of 83TM002. 83TM037 Replicate of 83TM005. 83TM038 Replicate of 83TM025. 83TM039 Replicate of 83TM029. 83TM040 Replicate of 83TM032. 83TM051A Dark aphanitic dike cutting Conway granite. 83TM051B Porphyritic Conway granite. 83TM052B Altered prophyritic Conway granite cut by thin quartz veins (1-20 mm wide) bearing sulfides, fluorite, magnetite. 83TM052C Porphyritic Conway granite. 83TM053 Porphyritic Conway granite. 83TM054 Porphyritic Conway granite containing minor disseminated sulfide.

83TM055 Conway granite cut by thin (

83TM056 Conway granite. Semi-rusty.

83TM057 Composite of 0.1-6.0 cm wide quartz veins cutting Conway granite.

83TM064 Meta-felsite. Devonian Littleton Formation. Crawford Notch quadrangle. 83TM065 Altered Conway granite. 83TM066 4 mm wide quartz + feldspar + muscovite vein cutting micaceous schist of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83TM067 1 cm wide micaceous quartz vein cutting the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. Field number Sample description 83TM068 1-2 cm wide micaceous quartz vein cutting micaceous schist of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83TM069 Composite chips of unidentified black, bladed mineral taken from felsic outcrop of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83TM070 Mica schist cut by thin quartz veins. Rusty. Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83TM071 15 cm thick quartz vein cutting Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83TM072 20-30 cm wide vein of mostly quartz cutting Devonian Kinsman Quartz Monzonite, Mt. Moosilauke quadrangle. 83TM074 Porphyritic quartz syenite. 83TM076 Porphyritic Conway granite. 83TM077 Fine-grained Conway granite. Rusty weathered biotite. 83TM078 Composite of quartz veins 0.1 to 10 cm thick cutting Conway granite. 83TM079 Porphyritic Conway granite. 83TM080 Conway granite. 83TM082 0.5-1.0 cm thick quartz veins cut Conway granite. 83TM083 Conway granite. 83TM083A Conway granite. Field number Sample description

83TM084 Altered porphyritic Conway granite cut by dark gray quartz

veins. Disseminated grains of pyrrhotite and chalco-

pyrite up to 3 mm across.

83TM085A Fine-grained granitic dike cuts porphyritic Conway granite.

83TM085B Porphyritic Conway granite.

83TM085C Aplite within Conway granite.

83TM086 Porphyritic Conway granite. Contains miarolitic cavities.

Semi-rusty.

83TM087 3 cm wide, variably textured, semi-rusty aplite dike cutting

Conway granite.

83TM087A Composite of closely spaced quartz veins (0.5-1 cm thick)

cutting Conway granite. Unidentified metallic gray tantalum

bearing mineral is disseminated in the quartz. Some of

the veins are open, exposing quartz crystals.

83TM088A Fine-grained granitic dike (2.5 feet wide) cutting Conway

granite.

83TM088B Aplite dike cutting Conway granite.

83TM089 Altered Conway granite contains minor disseminate pyrite.

83TM090 Altered Conway granite cut by 5 mm wide quartz and quartz + feldspar veins.

83TM091 Devonian Kinsman quartz monzonite. Mt. Chocura quadrangle.

83TM092 Devonian Kinsman quartz monzonite. Mt. Chocura quadrangle.

83TM093 Replicate of 83C425.

83TM094 Conway granite cut by closely spaced 1-2 mm thick quartz veins,

83TM200 Altered quartz monzonite. Devonian. Plymouth quadrangle. Field number Sample description

83TM200A Altered quartz monzonite. Devonian. Plymouth quadrangle.

83C302A Composite of thin (

Mount Osceola granite.

83C302B Mount Osceola granite.

83C303 Moat volcanics. Porphyritic rhyolite with 3-4 mm quartz and

feldspar phenocrysts contains darker angular rock fragments

1-2.5 cm in size.

83C304 Moat volcanics. Same description as 83C303.

83C305A Moat volcanics. Same description as 83C303.

83C306A Quartz vein cutting Conway granite. 5-8 cm wide.

83C306B Composite of chips of Conway granite cut by quartz veins and

containing disseminated euhedral pyrite (

adjacent to the veins.

83C306E Same description as 83C306B.

83C307A Quartz vein (10-15 cm wide) cutting pegmatite within the

Devonian Kinsman quartz monzonite. Lincoln quadrangle.

83C307B Devonian Kinsman Quartz Monzonite. Lincoln quadrangle.

83C307D Garnet-bearing aplite within Devonian Kinsman Quartz Monzonite,

Lincoln quadrangle.

83C308A Devonian(?) migmatite. Lincoln quadrangle.

83C308B Devonian(?) migmatite. Lincoln quadrangle.

83C308C Devonian(?) pegmatite. Lincoln quadrangle.

83C309 Devonian(?) pegmatite. Lincoln quadrangle.

83C310A Phaneritic mafic dike cutting Conway granite.

83C310B Conway granite. Field number Sample description

83C311 Altered Conway granite containing base metal sulfides along fractures. 83C312A Altered Conway granite containing coarse grained (_<6 mm) disseminated sulfides (sphalerite and galena). 83C312B Conway granite(?) or Mount Osceola granite(?). 83C312C Altered Conway granite. 83C313 Mount Osceola granite. 83C314A Mount Osceola granite. 83C314B Mount Osceola granite. 83C315 Mount Osceola granite. 83C316 Mount Osceola granite. 83C318B Conway granite cut by 1-2 mm wide quartz veins. 83C319A Composite of 0.1-1.0 cm wide quartz veins cutting Conway granite, 83C319B Altered Conway(?) granite containing disseminated pyrite and fl uorite.

83C319C Same description as 83C319B.

83C320 Flow banded rhyolite dike ( 2 meters wide) cutting Mount

Osceola granite.

83C321 Quartz vein cutting Mount Osceola granite.

83C322 Mount Osceola granite.

83C323 Fine-grained Conway granite.

83C324 Fine-grained felsic dike (4-5 cm wide) cutting Conway granite.

83C326 Fine-grained semi-rusty felsic dike (25-30 cm wide) cutting Conway granite. 83C327 Conway granite.

10 Field number Sample description 83C328 Pegmatitic pod within fine-grained felsic dike cutting Conway granite. 83C330 Porphyritic Conway granite. 83C331A Pegmatitic pod within fine-grained felsic dike cutting Conway granite. 83C331B Porphyritic Conway granite cut by thin quartz vein with 3 cm wide alteration selvedge. 83C332 Composite of chips from several 5 to 20 cm wide quartz veins cutting Conway granite. 83C333A Hanging wall to 0.5 meter wide pegmatitic dike. Moat Volcanics(?). 83C333B Float piece of extensive pegmatite from Conway granite. 83C333C Footwall to 0.5 meter wide pegmatitic dike. Conway granite(?) 83C334 Quartz and feldspar porphyry dense with miarolitic cavities 1-6 cm across. 83C337 Porphyritic quartz syenite. 83C338 Porphyritic Conway granite. 83C339A Conway granite. 83C339B Pegmatitic Conway granite. Half-meter long pods of coarse quartz and feldspar within variably textured but mostly equigranular Conway granite. 83C340 Conway granite. 83C342 Mesozoic gabbro. 83C343 Rusty meta-quartzite. Silurian Rangeley Formation. Crawford Notch quadrangle.

11 Field number Sample description

83C344 Meta-quartzite. Silurian Rangeley Formation. Crawford Notch

quadrangle.

83C345A Fragments of altered schist with copper-oxide stain from

dike-intruded breccia zone. Within Silurian Rangeley

Formation. Crawford Notch quadrangle.

83C345B Light aphanitic dike cutting brecciated schist of Silurian

Rangeley(?) Formation. Crawford Notch quadrangle.

83C345C Dark aphanitic dike cutting brecciated schist of Silurian

Rangeley(?) Formation. Crawford Notch quadrangle.

83C346 Porphyritic Conway granite.

83C347 Altered Conway granite cut by <1 mm to 10 mm wide quartz veins,

83C347A Altered Conway granite cut by <1-10 mm wide quartz veins.

83C347V Composite of <1 mm to 15 cm thick quartz veins cutting

Conway granite.

83C349 Porphyritic quartz syenite cut by thin (1 mm wide) quartz

plus feldspar veins.

83C350A Moat Volcanics. Thin (2 cm) basalt dikes with disseminated

fine grained pyrite cut gray tuff.

83C350B Altered moat volcanics bearing unidentified metallic mineral.

83C351 2-3 cm thick micaceous dike composed of quartz + feldspar +

muscovite cuts magnetic basalt of the Moat Volcanics.

83C352 Moat Volcanics. Flow-banded quartz porphyry.

83C354A Quartz vein (10 cm wide) cutting Conway granite.

83C354B Porphyritic Conway granite.

12 Field number Sample description

83C355A 7 mm wide quartz vein cuts Mount Osceola granite.

83C355B Mount Osceola granite cut by 1-2 mm veins of gray quartz.

83C356A Altered Moat Volcanics. Gray tuff with fewer than 10%

phenocrysts of quartz and feldspar. Local disseminated

pyrite grains with alteration selvedges. Random hairline

quartz veins.

83C356B Pegmatitic pod of rusty quartz and feldspar along joint

crossing Moat Volcanics.

83C361 Porphyritic quartz syenite.

83C362 Conway granite.

83C363 Conway granite. Semi-rusty.

83C364A Conway granite.

83C364B Porphyritic Conway granite.

83C365 Pegmatite within Conway granite.

83C366 Conway granite.

83C367 Porphyritic Conway granite.

83C369 Conway granite.

83C370 Light aphanitic dike cuts porphyritic Conway granite.

83C371 Quartz vein cutting porphyritic Conway granite.

83C374A Meter long block of Conway granite within rhyolite dike cutting

meta-sediment of Ordovician Albee Formation. Guildhall

quadrangle.

83C375 Fluorite bearing rhyolite dike cutting meta-sediment of

Ordovician Albee Formation. Guildhall quadrangle.

13 Field number Sample description

83C376 Rhyolite dike cutting meta-sediment of Ordovician Albee

Formation. Guildhall quadrangle.

83C377A Meta-sediment. Ordovician Albee Formation. Guildhall quadrangle

83C378 Replicate of 83C347A.

83C379 Replicate of 83C354B.

83C380 Replicate of 83C366.

83C381 Dark aphanitic dike at contact of 2 Mesozoic intrusive units.

83C384 Composite chips from clastic porphyritic quartz syenite.

83C385 Amphibole granite.

83C386A Altered Conway granite. Rusty.

83C387A Composite of small (_

Conway granite.

83C390A Light gray aphanitic dike cutting Paleozoic rocks.

83C390B Rhyolite dike cutting Paleozoic rocks.

83C393 Fine-grained granitic dike cutting Conway granite.

83C394 Quartz vein cutting Conway granite.

83C395 Fine- to medium-grained Conway grantie cut by 1 mm veins

of mostly biotite.

83C396 Conway granite.

83C398 3-7 cm wide quartz vein cutting Mt. Moosilauke member of

the Devonian Littleton Formation. Vein contains unidentified

equant black mineral. Mt. Moosilauke quadrangle.

83C399 3-7 cm wide quartz vein cutting Mt. Moosilauke member of

the Devonian Littleton Formation. Mt. Moosilauke quadrangle.

14 Field number Sample description 83C400 Thin (1-2 mm) quartz vein with 3 cm alteration selvedge cutting schist of the Mt. Moosilauke member of the Devonian Littleton formation. Mt. Moosilauke quadrangle. 83C401 5 cm wide quartz vein cutting schist of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83C402 Hematite stained quartz vein cutting schist of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83C403 Gray, aphanitic Mesozoic dike (0.5 meters wide) cutting schist of the Mt. Moosilauke member of the Devonian Littleton Formation. Mt. Moosilauke quadrangle. 83C405 Composite of Moat Volcanics basalt. Magnetic basalt with quartz and epidote filled amygdules and basaltic breccia. 83C406A Moat Volcanics. Rhyolitic crystal tuff with roughly 50% 2-3 mm quartz and feldspar phenocrysts and lesser rock fragments. 83C407 Moat Volcanics. Gray crystal rich tuffs cut by thin dark gray veins (quartz?). 83C409 Porphyritic Conway granite. Semi-rusty. 83C410 Composite of thin quartz veins (

15 Field number Sample description 83C414 Altered Conway granite. Hematite stained and cut by 1 cm wide quartz veins. 83C415A Composite of 1-10 cm wide quartz and quartz plus feldspar veins cutting Conway granite, spaced 1/2 to 1 meter apart, 83C415B Pel sic dike cutting Conway granite. 83C417A Conway granite with unidentified altered mineral. 83C417B Porphyritic Conway granite with unidentified disseminated rusty mineral. 83C417C Gray phaneritic dike cuts Conway granite. 83C417D Altered Conway granite. Rusty. 83C419A Micaceous quartz veins cut porphyritic Conway granite. 83C419B Porphyritic Conway granite contains minor disseminated molybdenite.

83C419B2 Porphyritic Conway granite. Contains minor disseminated sulfides.

83C419C Porphyritic Conway granite containing miarolitic cavities of coarser quartz and feldspar and disseminated sulfides.

83C420 Porphyritic syenite cut by 2 cm wide micaceous quartz vein (with narrow alteration selvedge) that widens into a coarse quartz and feldspar filled cavity. Near Conway granite contact. 83C421 Porphyritic Conway granite. 83C422A Pegmatitic dike within Conway granite associated with miarolitic cavities.

16 Field number Sample description

83C422B Conway granite. Miarolitic cavities contain euhedral smoky

quartz crystals.

83C424B Altered Conway granite cut by closely spaced thin quartz

veins.

83C425 Semi-rusty fine-grained granitic dike 5 meters wide cutting

Conway granite.

83C426A Semi-rusty aplitic phase of Conway granite containing thin discontinuous quartz veins. 83C426B Conway granite. 83C427 Pegmatite cuts Paleozoic rock. 83C428 Conway granite. 83C429 Composite of 1-3 cm thick quartz veins with pyrite cutting Mount Osceola granite.

83C430 Replicate of 83TM088B. 83C431 Replicate of 83TM088A. 83C432 Replicate of 83TM085B. 83C433 Replicate of 83TM093. 83C437B Dark phaneritic dike cutting Mount Osceola granite. 83C440 Mount Osceola granite cut by very thin bifurcating pyritic quartz(?) veins. 83C442 Mesozoic leucogranite. 83C443 Mesozoic leucogranite. 83C444 Mesozoic leucogranite. 83C450 Seriate porphyritic Conway granite.

17 Field number Sample description 83C460A Conway granite. Rusty. 83C460C Aplite dike cutting Conway granite. 83C460D Conway granite. 83C500A1 Altered porphyritic Conway granite cut by quartz veins with 1 cm wide altered selvedges. Rusty. 83C500A2 Quartz vein cutting Conway granite. Visible fluorite. 83C500B Conway granite.

18 Analytical Techniques for Table 1 and Table 2 236 rock samples were crushed to approximately 6 mm and pulverized to minus 140-mesh (0.105 mm) in a vertical grinder having ceramic plates. The samples were analyzed semiquantitatively for 31 elements by means of a six-step, D.C.-(direct-current) arc, optical-emission spectrographic method (Grimes and Marranzino, 1968) by E. F. Cooley in USGS laboratories, Denver, Colorado. The semiquantitative spectrographic values are reported as six steps per order of magnitude (1, 0.7, 0.5, 0.3, 0.2, 0.15, or multiples of 10 of these numbers) and are approximate geometric midpoints of the concentration ranges. The expected precision is within one adjoining reporting interval on each side of the reported value 83 percent of the time and within two adjoining intervals 96 percent of the time (Motooka and Grimes, 1976). In addition, each sample was analyzed by means of an atomic absorption technique for tin (Welsch and Chao, 1976) by R. Hill in USGS laboratories, Denver, Colorado. The method employed is very effective in releasing tin from cassiterite but for samples in which tin is occluded or substituting in the structure of silicate minerals, destruction of the silicate structure would be necessary to release the tin. This was not done for the samples reported here, therefore the tin values reported for this method are repre­ sentative of the non-silicate tin in the sample. The 14 concentrated stream sediment samples were collected from sites upstream to sample sites reported by Domenico, et al., 1982. Eight sites were chosen for their relationship to specific geologic contacts.

19 Stream sediment was concentrated by panning at the collection site. Subsequent concentration and sample preparation were performed in USGS lab­ oratories in Denver, Colorado. The samples were analyzed semiquantitatively for 31 elements using the six-step optical-emission spectrographic method by J. A. Domenico in Denver, Colorado. Explanation of Table 1 and Table 2 Paul G. Schruben formatted the analytical data by computer methods for Table 1. Table 1 shows the results of geochemical analyses of rock samples from the Lewiston 1x2° quadrangle. The rock samples are listed in the order of increasing number. In Tables 1 and 2 the spectrographic analyses of iron, magnesium, calcium, and titanium concentrations are reported in percent (pet.); all other elements are given in parts per million (ppm). Symbols used in the table are: N, not detected; --, not determined; <, amount detected is below the lowest limit of determination (which is the figure shown); and >, amount detected is above the highest limit of deter­ mination (which is the figure shown). Tin determined by atomic absorption (aa) for the rock samples has been added as the last column of values in Table 1. Of the 31 elements looked for spectrographically, those not found in the rock samples have been omitted from Table 1. The elements omitted with the detection limits following in parenthesis are: Au (10), Sb (100), W (50), and Th (100). An exception is sample 83C314A which contains 200 ppm Th.

20 The concentrated stream sediment samples were analyzed by emission spectrography only. These samples are listed in Table 2. Elements looked for spectrographically and not found include: Ag (1.5), As (500), Au (10), Cd (20), Co (5), Cu (10), Ni (5), Sb (100), Sr (100), and Zn (200) with the exceptions of sample 83C372 which contains 500 ppm As and sample 83C418 which contains 20 ppm Cu. These ten elements have been omitted from Table 2.

Explanation of Table 3. 23 rock samples were crushed between ceramic plates in a jaw crusher then ground to a fine powder (less than 200 mesh) in an alumina-ceramic dish within a shatterbox. The packed powder was analyzed by EDS-XRF on a Kevex 0700 system by J. Eckert in a USGS laboratory, Reston, Virginia. The values were determined using simple linear regressions derived from values obtained from powdered rock standards. Elements looked for and not found by EDS-XRF are Cr (33) and Ni (20) which have been omitted from Table 3. The detection limit for each element is in parenthesis below each element. Values are reported in ppm's.

21 Table 1. Analyses of rock samples by semi-quantitative spectrographic analysis and atomic absorption. Analysts E. F. Cooley and R. H. Hill. Rock Samples

Samp 1 e Latitude Longitude Fe-pct . Mg-pct . Ca-pct . T1-pct . Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s

83TM001 43 53 32 71 34 20 1 .50 <.02 .05 .050 300 N N <10 100 7 83TM002 43 55 45 71 31 20 2.0O .05 . 10 .050 3OO N N <10 100 7 83TM003 43 55 16 71 34 37 1 .50 .02 <.05 .020 200 <.5 N <10 20 10 83TM004 43 55 20 71 34 40 2.00 .02 .07 .020 100 N N 10 30 10 83TM005 43 55 24 71 34 46 2.00 . 10 . 10 .070 500 N N <10 100 10

83TM006 43 55 22 71 35 4 3.00 . 10 .20 . 10O 300 N N 10 150 7 83TM006B 43 55 22 71 35 4 10.00 3.00 2.00 1.000 2.00O N N <10 1 ,000 2 83TM007 43 55 11 71 35 15 5.00 .20 .30 . 100 300 N N 10 300 7 83TM008 43 55 6 71 35 23 3.00 . 10 .20 . 100 300 N N 10 200 20 83TM009 43 54 59 71 35 28 2.00 .02 . 10 .050 200 N N 10 30 7

83TM010 43 54 49 71 35 27 5.00 . 15 .50 . 100 700 N N 10 70 10 83TM011 43 54 45 71 35 28 2.00 .02 .10 .030 200 N N 10 70 7 83TM012A 43 58 0 71 33 20 15. OO 3.00 <-05 1.000 2,000 N N 20 500 2 83TM012B 43 58 0 71 33 20 5.00 1.00 . 10 .500 1.0OO N N 20 500 3 83TM012C 43 58 0 71 33 20 7.00 1 .OO .07 .500 700 N N 20 500 5

83TM013A 43 57 56 71 33 27 7.00 2.00 <.05 1 .000 700 N N 50 500 3 83TM013B 43 57 56 71 33 27 1 .00 .02 .05 .020 200 N N 10 50 10 83TM013C 43 57 56 71 33 27 1.00 .02 <.05 .020 200 N N 10 30 10 83TM014 43 57 34 71 33 20 1 .00 .02 .05 .020 200 N N <10 <20 10 83TM015 43 57 46 71 32 46 2.00 .05 . 10 .050 300 N N 10 100 10

83TM017A 43 57 58 71 32 30 3.00 . 10 .05 .050 500 N N <10 100 10 83TM017B 43 57 58 71 32 30 20.00 7.00 7.00 1 .000 2,000 N N <10 500 1 83TM018 43 58 2 71 32 5 3.00 1 .00 .70 .300 1,000 N N 10 1 ,000 10 83TM019 43 53 30 71 33 30 2.00 .02 .30 .070 2OO N N <10 30 10 83TM020A 43 53 17 71 33 17 5.0O 2.00 2.00 .500 700 N N <10 100 5

83TM020B 43 53 17 71 33 17 5.00 1.50 .20 .300 300 N N 10 300 5 83TM021 43 53 13 71 34 45 10.00 2.00 <-05 1 .000 2.000 N N 10 500 7 83TM022 43 56 5 71 30 57 2.00 .05 .05 .070 200 N N 10 100 10 83TM023 43 55 35 71 30 14 2.00 .05 . 10 .070 200 N N 10 100 10 83TM024A 43 55 27 71 30 10 2.00 .03 .05 .050 200 1.0 N <10 50 10

83TM024B 43 55 27 71 30 10 1.OO .05 <.05 .020 1 .000 N N 10 30 7 83TM025 43 55 23 71 30 2 2.00 .02 - 10 .050 200 N N 10 50 5 83TM026 43 54 39 71 30 40 2.0O .05 .05 .070 3OO N N 10 100 1O 83TM027 43 56 10 71 30 17 5.0O .05 .30 .070 700 N N 10 100 10 83TM028 43 52 26 71 32 50 10.00 5.00 10.00 .500 1 .500 N N 200 150 2

83TM029 43 59 14 71 33 6 1.50 .30 .50 . 1OO 500 N N 10 200 10 83TM030 71 35 47 7.00 N 43 54 10 2.00 1 .00 .500 300 ,' N 10 20O 5 83TM031A 43 54 47 71 35 49 10.0O 2.00 .50 .500 1,000 N 10 500 10 83TM031B 43 54 47 71 35 49 2.00 .70 <-05 .010 500 N N 30 300 70 83TM032 43 54 52 71 32 58 1.00 .02 . 10 .030 300 N N 10 30 20

83TM033 43 58 19 71 34 4 5.00 1 .OO .05 .500 500 N N 50 70 2 83TMO34 43 55 36 71 31 36 2.OO .05 .20 .070 300 N N 10 150 15 83TM035A 43 55 42 71 32 0 10.00 .50 .50 .200 1.500 N N <10 1 .000 10 83TMO35B 43 55 42 71 32 0 1 .00 .02 . 10 .050 100 N N 10 50 20 83TM035C 43 55 42 71 32 0 2.0O .03 .07 .050 300 N N 10 30 20 Rock Samples

Sample B1-ppm Cd-ppm Co-ppm Cr-ppm Cu-ppm La-ppm Mo-ppm Nb-ppm Ni -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm s s s s s s s s s s s s s

83TMOO1 N N N N <5 50 5 50 N 50 N N N 83TM002 N N N N <5 100 N 50 N 50 N 10 N 83TM003 10 N N N 7 50 N 30 N 50 N 30 N 83TMO04 N N N N 7 20 50 30 50 100 N 2O N 83TMOO5 N N N N 5 200 10 50 30 50 N 2O N

83TMO06 N N N N <5 70 50 50 50 100 5 10 N 83TMO06B N N 5O 20 30 100 30 100 50 20 3O <10 1 .OOO 83TMOO7 N N N N <5 70 30 70 5O 50 5 10 N 83TMO08 N N N N 10 70 10 50 2O 50 5 10 N 83TMOO9 N N N N <5 5O 5 50 30 50 <5 <10 N

83TM010 N N N N <5 1OO 20 7O N 50 5 N N 83TMO11 N N N N <5 70 N 50 N 50 <5 <10 N 83TM012A N N 70 N <5 70 N 50 100 20 30 10 N 83TM012B N N 10 N 5 1OO N 20 20 30 1O 15 15O 83TM012C N N 20 150 5 50 N 2O 50 30 15 30 100

83TM013A N N 50 50 2O 1OO 10 50 70 10 2O <10 N 83TM013B N N N 50 <5 50 N 50 5 70 N <10 N 83TM013C N N N N <5 50 N 50 N 50 N <10 N 83TM014 N N N 100 <5 50 N 100 N 50 N 10 N 83TM015 N N N N <5 10O N 50 10 70 N 20 N

83TMO17A N N N N 5 100 N 7O N 50 5 50 N 83TM017B N N 70 2OO 50 50 10 50 150 15 20 N 1 ,OOO 83TM018 N N 5 N 1O 2OO 5O 20 50 70 7 15O 1 ,OOO 83TM019 N N N N <5 50 N 1OO <5 50 5 10 N 83TM02OA N N 15 50 5 50 N 2O 20 20 10 N 1OO

83TM020B N N 5 20 2O 70 2O 2O 30 50 10 N 100 83TMO21 N N 70 150 50 50 N 20 70 30 30 50 <1OO 83TMO22 N N N N 2O 150 20 100 70 50 5 50 N 83TM023 N N N N <5 50 20 50 N 50 5 10 N 83TMO24A <1O N N N <5 50 N 70 N 1OO <5 10 N

83TM024B N N N N <5 5O N 50 5 20 <5 N N 83TMO25 N N N N <5 50 5 50 10 50 <5 <10 N 83TM026 N N N N <5 5O 20 50 20 50 5 <10 N 83TM027 N N N N <5 50 N 50 5 50 5 <10 N 83TM028 N N 5O 100 50 50 10 <20 100 10 30 N 300

83TM029 <10 N N N <5 50 N 20 N 100 <5 N 100 83TM03O N N 20 50 50 70 N 30 10 50 15 N 200 83TM031A N N 20 1OO 20 100 5 30 50 20 20 1O 1OO 83TM031B <10 N N N <5 50 30 20 50 10 <5 20 N 83TM032 <1O N N N <5 100 N 50 5 50 <5 N N

83TM033 N N 10 7O 1O 70 20 3O 50 30 10 N 1OO 83TM034 N N N N <5 15O 5 70 10 50 N 10 N 83TMO35A N N N N <5 100 N 70 <5 30 15 N 100 83TM035B N N N N <5 200 5 7O 20 30 N <10 N 83TM035C N N N N <5 150 20 7O 20 50 N 10 N Rock Samples

Sample V-ppm Y-ppm Zn-ppm Zr-ppm Sn-ppm s s s s aa

83TMOO1 <1O 50 20O 2OO 2 83TMO02 <10 50 <20O 3OO 3 83TMOO3 <1O <10 <2OO 5O 6 83TMOO4 15 3O <200 30 4 83TMO05 1O 50 200 15O 4 83TMOO6 1O 50 200 2OO 3 83TMOO6B 1OO 50 3OO 2OO 3 83TM007 2O 50 200 2OO 2 83TMOO8 1O 50 2OO 2OO N 83TMOO9 1O 1O <200 2OO 3 83TMO10 <10 50 500 30O N 83TMO11 <1O 2O <20O 20O 7 83TMO12A 2OO 7O 700 20O <2 83TMO12B 1OO 2O 2OO 3OO N 83TMO12C 1OO 2O <2OO 5OO <2

83TMO13A 150 5O 3OO 2OO 2 83TMO13B <10 10 <2OO 20O 15 83TMO13C <10 5O <2OO 15O 5 83TMO14 <1O 50 <200 200 N 83TM015 <10 30 <200 30O 4

83TM017A <10 3O <2OO 200 15 83TMO17B 200 3O <200 2OO N 83TMO18 1OO 2O <200 2OO 25 83TM019 <1O 100 <200 2OO 3 83TM020A 100 10 2OO 2OO N

83TM02OB 1OO 10 <200 3OO 2 83TMO21 200 50 <200 3OO 2 83TMO22 70 70 <2OO 30O 5 83TM023 <10 5O <2OO 200 2 83TM024A <1O 50 2OO 2OO 2

83TMO24B 10 50 <2OO 1OO <2 83TM025 10 50 <200 2OO 2 83TMO26 2O 1O 2OO 200 <2 83TMO27 10 3O 300 2OO 2 83TM028 2OO 2O 2OO 100 N

83TM029 1O 1O 2OO 7O 2 83TM030 100 20 500 3OO N 83TMO31A 2OO 50 300 300 N 83TM031B 50 N <2OO N N 83TMO32 1O 50 <2OO 100 6

83TM033 1OO 10 200 100 2 83TM034 <10 50 200 100 <2 83TMO35A <10 50 700 5OO 2 83TM035B 10 100 <2OO 200 2 83TM035C 10 2O <200 200 <2 Rock Samples--continued

Sampl e Latitude Longitude Fe-pct . Mg-pct. Ca-pct . Ti-pct. Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s

83TM036 43 55 45 71 31 20 1 .OO .02 .05 .O5O 2OO N N <10 20O 1O 83TM037 43 55 24 71 34 46 2.00 .05 .30 . 100 300 N N 10 150 15 83TMO38 43 55 23 71 30 2 .70 <.02 .05 .020 1OO N N 1O 2O 7 83TM039 43 59 14 71 33 6 2.00 .20 . 10 .070 1.OOO N N 1O 300 10 83TMO40 43 54 52 71 32 52 2.OO .05 . 1O .050 5OO N N 10 5O 3OO

83TM051A 43 55 45 71 30 55 20.00 3.00 2.00 1.000 2.OOO N N 10 1 ,000 5 83TM051B 43 55 45 71 30 55 2.00 . 10 .20 .07O 300 N N 10 1OO 10 83TM052B 43 55 36 71 30 50 2.00 .05 .20 .020 1 ,500 7.0 N 10 100 10 83TM052C 43 55 36 71 30 50 2.00 . 10 .30 .070 700 N N 10 100 10 83TM053 43 55 27 71 30 51 2.00 . 10 . 10 .070 300 N N 10 100 10

83TM054 43 55 22 71 30 43 2.OO . 10 . 10 .070 1 ,OOO <.5 700 10 1OO 15 83TM055 43 55 14 71 30 22 1.00 <.02 <.05. .050 200 N N 10 30 10 83TM056 43 55 16 71 30 10 1.OO .02 . 10 .050 300 N N 10 50 1O 83TM057 43 55 27 71 30 10 1 .50 .02 <.05 .030 5OO N N 10 <2O 10 83TM064 44 12 15 71 25 48 1 .OO .50 . 1O .2OO 20O <.5 N 10 1OO 10

83TM065 44 12 52 71 25 42 1.OO .02 <.O5 .020 1OO <.5 N 10 50 3O 83TM066 44 2 16 71 48 5 5.00 1 .00 2.00 -5OO 1 ,OOO N N 500 200 100 83TM067 44 2 13 71 48 10 5.00 1 .00 .20 .500 500 N N >2,000 150 10 83TM068 44 2 12 71 48 19 .50 .05 .20 .020 50 N N 50 50 2 83TM069 44 211 71 48 19 2.00 .70 . 10 .070 100 N N >2,000 70 2

83TM070 44 2 13 71 48 14 5.00 1 .00 1 .00 .500 300 <.5 N 50 100 2 83TM071 44 2 15 71 48 7 .05 .02 <.05 .010 50 N N 300 20 2 83TM072 44 2 18 71 47 55 2.OO .70 .50 .200 1 ,OOO N N 5O 50 7 83TM074 44 13 49 71 30 2 5.OO . 10 .70 .2OO 1 ,000 N N 1O 2OO 7 83TM076 43 57 14 71 33 21 1.5O .02 .05 .015 500 N N <10 20 10

83TM077 43 57 16 71 33 32 1 .00 <.O2 <.05 .010 2OO N N 10 <20 7 83TM078 44 9 29 71 41 49 .50 .02 <.05 .010 100 N N 10 50 5 83TM079 44 9 35 71 41 23 2.00 .05 .20 .050 3OO N N 10 70 10 83TM080 44 9 44 71 41 39 2.00 .07 .20 .030 700 N N <1O 100 10 83TM082 44 9 50 71 41 34 2.OO .03 <.05 .030 300 N N <10 70 7

83TM083 44 9 50 71 41 33 1.50 .02 <-05 .020 200 N N <1O <20 10 83TM083A 44 9 50 71 41 33 .50 .02 <.O5 .010 20 N N <10 <20 7 83TM084 44 4 30 71 32 58 2.00 <.02 . 10 .200 100 N N 15 50 10 83TM085A 44 4 45 71 34 2 1.00 .05 .05 .050 50 N N 10 70 1O 83TM085B 44 4 45 71 34 2 3.00 .05 .50 .O5O 500 N N 10 1OO 15

83TM085C 44 4 45 71 34 2 1.00 <.02 .05 .010 200 N N <10 <20 50 83TM086 44 4 45 71 34 5 1 .00 <.02 .05 .020 100 N N <10 <2O 10 83TM087 44 4 46 71 34 9 .50 <.02 .05 .O1O 70 N N <1O <2O 7 83TM088A 44 4 47 71 34 14 1.00 <.02 .05 .005 300 N N 10 <2O 10 83TM088B 44 4 47 71 34 41 .50 <.02 <.05 .005 50 N N 10 <20 10

83TM089 44 4 47 71 34 15 2.00 .02 .20 .050 300 N N 10 100 10 83TM090 43 55 50 71 29 16 1 .50 <.02 .50 .030 3OO <.5 N 10 <20 20 83TM091 43 55 50 71 29 15 2.00 .70 .50 . 150 300 N N 10 5OO 2 83TM092 43 55 10 71 28 25 1.00 .50 1 .OO . 1OO 2OO N N 1O 5OO 3 83TM093 43 56 41 71 20 30 5.00 <.02 .30 .050 500 N N 10 <20 15 Rock Samples--continued

Sample B1 -ppm Cd-ppm Co -ppm Cr-ppm Cu-ppm La-ppm Mo -ppm Nb-ppm N1 -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm s s s s s s s s s s s s s

83TM036 N N N N N 50 N 20 N 50 N <10 N 83TM037 <10 N N N <5 500 10 50 N 70 <5 10 N 83TM038 N N N N <5 50 N 30 N 20 <5 <10 N 83TM039 <10 N N N <5 50 N 2O N 200 <5 <10 100 83TM040 <10 N N N 5 50 5 50 N 100 <5 <10 N

83TM051A N N 70 50 50 50 1O 50 150 20 2O <10 700 83TM051B N N N N <5 50 N 5O N 1OO N 10 N 83TM052B 2O 20 N N <5 50 N 50 5 500 <5 100 N 83TM052C N N N N <5 50 N 50 N 50 <5 20 N 83TM053 N N N N <5 50 N 50 N 50 <5 10 N

83TM054 10 N N N <5 70 N 50 N 500 <5 3O N 83TM055 N N N N <5 50 N 50 N 50 N 10 N 83TM056 N N N N <5 200 N 20 N 50 N <1O N 83TM057 <10 N N N <5 50 N 50 N 150 N <10 N 83TM064 N N N N 10 1OO <5 100 10 30 5 20 1OO

83TM065 N N N N <5 50 <5 100 10 20 N 20 N 83TM066 N N N N 20 50 <5 20 N 2O 15 50 3OO 83TM067 N N 10 200 5 50 N 2O 20 20 10 20 150 83TM068 N N N N <5 <2O 20 <2O 3O 30 5 N <1OO 83TM069 N N N N <5 50 N <20 10 2O 20 N 200

83TM070 N N N 100 30 50 N <20 20 2O 15 N 200 83TM071 N N N N <5 50 N <2O 5 <10 N N N 83TM072 N N <5 20 7 50 N <2O 10 50 5 N 20O 83TM074 N N N . N 20 100 <5 100 5 50 5 20 <100 83TMO76 N N N N <5 50 N 50 5 50 <5 1O N

83TMO77 N N N N <5 2O N 5O 10 50 N 20 N 83TM078 N N N N <5 20 N 20 20 <10 N N N 83TM079 N N N N <5 20 N 100 <5 5O <5 N N 83TM08O N N N N <5 20 N 50 10 50 <5 <10 N 83TM082 N N N N <5 20 N 70 10 30 <5 N N

83TM083 N N N N <5 <20 N 100 10 50 N N N 83TM083A N N N N <5 20 N 70 <5 10 N N N 83TM084 10 N N N 5 70 N 50 10 50 <5 30 N 83TMO85A N N N N <5 100 <5 100 10 30 <5 20 N 83TM085B N N N N <5 70 N 150 5 50 <5 30 N

83TM085C N N N N <5 30 5 50 10 30 N 10 N 83TMO86 N N N N <5 <2O 10 50 20 20 N 10 N 83TM087 N N N N <5 <2O 5 50 N 50 N <10 N 83TM088A N N N N <5 30 N 50 5 100 N 20 N 83TM088B N N N N <5 2O N 50 5 50 N N N

83TM089 N N N N <5 1OO 5 70 5 50 <5 1O N 83TM090 N N N N <5 150 N 50 7 50 <5 <1O N 83TMO91 N N N N 20 50 N <20 1O 50 5 N 100 83TM092 N N N N <5 50 5 <2O 20 50 5 N 200 83TMO93 N N N N <5 200 <5 200 N 50 N 20 N Rock Samples--continued The latitude and longitude for 83TM094 through 83C332 are on the following page, Sample V-ppm Y-ppm Zn-ppm Zr-ppm Sn-ppm Sample V-ppm Y-ppm Zn-ppm Zr-ppm Sn-ppm 8 8 s s aa aa

83TM036 <10 10 <200 <10 N 83TMO94 < 10 20 200 50O 5 83TM037 <10 50 <20O 2OO 3 83TM200 20 10 <200 200 2 83TM038 <10 10 <200 1OO 3 83TM200A 20 10 200 20O 2 83TM039 10 N 300 1OO N 83C302A 10 70 300 500 3 83TMO40 <10 50 <200 30O 2 83C302B 10 50 200 30O 3

83TM051A 100 50 500 200 N 83C303 10 70 50O 500 2 83TM051B <10 50 200 20O <2 83C304 10 70 500 500 5 83TM052B <10 70 1,000 20O <2_ 83C305A 10 70 500 500 5 83TM052C <10 70 50O 10O <2 83C306A 10 10 <200 150 N 83TM053 <10 50 <20O 3OO 3 83C306B 10 70 700 20O 2 83TM054 <10 50 500 20O 2 83C306E 10 50 300 500 <2 83TM055 <10 50 <200 30O 4 83C307A 10 70 <200 20O 2 83TM056 <10 5O <200 100 <2 83C307B 10 70 1 ,OOO 100 <2 83TMO57 <10 50 50O 50 N 83C307D 10 N N <10 2 83TM064 10 70 N 30O 4 83C308A 50 70 70O 300 N 83TMO65 10 70 <20O 150 6 83C308B 100 70 300 300 N 83TM066 100 20 2OO 1OO 4 83C3O8C < 10 N <200 N N 83TM067 100 70 <200 500 N 83C309 < 10 N 200 <10 N 83TM068 50 N <2OO 20 2 83C310A 100 20 300 70 N 83TM069 <10 N <200 20 4 83C310B <10 50 500 30O <2 83TMO7O 70 50 <200 5OO 2 83C31 1 <10 50 2.OOO 300 15 83TMO71 20 N <2OO <10 <2 83C312A 10 50 >10,OOO 70 15 83TM072 50 50 <2OO 1OO N 83C312B 10 50 1 ,OOO 20O N 83TMO74 <10 1OO 50O 5OO <2 83C312C 10 50 > 10.OOO 200 9 83TM076 <10 30 <20O 1OO N 83C313 < 10 70 1 ,OOO 70 2 83TM077 <10 <10 <2OO 1OO 2 83C314A < 10 20O 50O 200 N 83TM078 10 <10 <2OO 7O N 83C314B < 10 50 30O 150 N 83TM079 <10 2O <20O 2OO 3 83C315 < 10 50 70O 30O 2 83TM08O 10 20 2OO 20O 5 83C316 < 10 20 20O 300 2 83TMO82 <10 7O <20O 2OO 4 83C318B < 10 50 50O 20O <2 83TMO83 10 20 <2OO 2OO- <2 83C319A < 10 50 700 30O 3 83TMO83A <10 50 <2OO 2OO <2 83C319B < 10 70 5OO 300 5 83TMO84 <1O 50 <20O 2OO 4 83C319C < 10 50 500 300 9 83TMO85A 10 70 <2OO 2OO <2 83C320 < 10 50 <20O 300 N 83TMO85B <10 70 3OO 30O 5 83C321 < 10 50 200 20 N 83TMO85C <10 5O <2OO 30O 2 83C322 < 10 50 300 50O 6 83TM086 10 20 <2OO <10 5 83C323 < 10 50 300 15O <2 83TMO87 <10 50 N 70 4 83C324 < 10 < 10 <20O 150 2 83TMO88A <10 70 <20O 2OO N 83C326 < 10 < 10 <200 100 4 83TMO88B <10 30 <2OO 10O <2 83C327 < 10 < 10 <20O 100 <2

83TM089 10 50 200 2OO N 83C328 < 10 < 10 <20O 20 <2 83TMO9O <1O 70 3OO 20 N 83C330 < 10 < 10 <20O 10O 2 83TMO91 50 10 20O 10O N 83C331A < 10 70 <2OO 20 40 83TMO92 50 <10 2OO 15O <2 83C331B < 10 50 3OO 30O 4 83TMO93 <10 70 50O 1.0OO 3 83C332 10 50 <20O 10O N Rock Samp 1es--contInued

Sample Latitude Longitude Fe-pct . Mg-pct. Ca-pct. Tl-pct . Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s

83TM094 43 56 53 71 19 40 5.0O .03 <.05 . 100 500 <.5 N 10 50 10 83TM200 43 58 49 71 33 34 1.00 .50 1.0O .070 500 N N 10 500 7 83TM200A 43 58 49 71 33 34 2.00 .50 .50 . 150 500 N N 10 500 7 83C302A 44 3 53 71 1 1 4O 3.0O .02 .30 .050 500 < . 5 N 10 100 7 83C302B 44 3 53 71 11 40 1 .50 .02 .30 .020 300 <.5 N 10 100 7

83C303 44 3 52 71 11 48 2.00 .02 <".05 .020 300 N N 10 20 50 83C304 44 3 52 71 11 56 2.00 .02 .05 .020 300 N N 10 20 10 83C305A 44 3 54 71 11 54 2.00 .02 .05 .020 300 < . 5 N 10 20 10 83C306A 44 3 3 71 39 12 .50 .02 <.05 .010 100 N N 10 30 5 83C3O6B 44 3 3 71 39 12 3.0O .02 <.05 .020 1,000 1 .0 N 10 200 7

83C306E 44 3 3 71 39 12 2.00 .02 . 10 .030 300 N N 10 100 10 83C307A 44 3 18 71 39 25 . 15 .02 <.05 .010 200 N N 10 30 5 83C307B 44 3 18 71 39 25 2.00 .20 .30 .015 1 ,500 N N 10 50 10 83C307D 44 3 18 71 39 25 1 .00 .02 . 10 .010 5,000 N N 10 <20 10 83C308A 44 3 20 71 39 26 3.00 .50 . 10 .200 1 ,000 N N 10 100 10

83C308B 44 3 20 71 39 26 10.00 1 .50 . 10 .500 2,000 N N 10 300 5 83C308C 44 3 20 71 39 26 1.00 .05 .05 .010 700 N N 10 20 10 00 83C309 44 3 22 71 39 26 1 .00 .05 .20 .015 300 N N 10 150 7 83C310A 44 3 0 71 16 10 15.00 5.00 3.00 1 .000 2,000 N N <10 700 2 83C310B 44 2 0 71 16 10 3.00 .05 .50 . 100 1,000 N N 10 200 10

83C311 44 2 59 71 16 7 10.00 .05 <.05 .070 5,000 .5 N 10 300 10 83C312A 44 2 56 71 16 8 7.00 . 10 .05 .070 >5 , 000 20.0 N < 10 150 10 83C312B 44 2 56 71 16 8 1.00 .05 .07 .070 300 < . 5 N < 10 200 10 83C312C 44 2 56 71 16 8 10.00 .50 .70 .200 5,000 .5 N 10 500 10 83C313 44 2 5O 71 16 1 3.0O <.02 .05 .050 500 N N 10 <20 10

83C314A 44 2 2O 71 15 38 3.00 .50 .70 .050 200 N N 10 150 20 83C314B 44 2' 20 71 15 38 .70 <.02 .05 .010 150 N N 10 <20 10 83C315 44 2 7 71 15 40 2.00 <.02 <-05 .050 500 N N 10 <20 10 83C316 44 1 57 71 15 44 1.00 <.02 <.05 .010 200 N N 10 <20 10 83C318B 44 8 48 71 22 33 2.0O -02 <.05 .050 300 <.5 N 10 20 7

83C319A 44 8 49 71 22 42 1.5O .02 <.05 .020 300 N N 10 50 50 83C319B 44 8 49 71 22 42 2.00 .02 .50 .070 500 N N 10 20 10 83C319C 44 8 49 71 22 42 2.00 .02 <-O5 .050 300 N N <10 50 20 83C32O 44 8 51 71 22 57 1.5O .05 .05 .020 200 N N 50 50 15 83C321 44 8 51 71 22 57 1.00 .02 1 .00 .010 5,000 N N <10 50 100

83C322 44 8 5O 71 23 8 2.0O .02 .20 .070 700 N N 10 50 20 83C323 44 8 47 71 22 17 1.50 <.02 .20 .050 300 N N 10 <20 20 83C324 44 39 42 71 26 15 1 .00 .02 .05 .020 200 N N 20 50 10 83C326 44 39 42 71 26 15 .50 <.02 <.05 .010 30O N N 20 <20 100 83C327 44 39 43 71 26 9 1 .00 .05 .20 .030 300 N N 10 70 20

83C328 44 39 4O 71 26 6 .70 .02 . 10 .015 300 N N 10 20 7 83C330 44 39 30 71 26 3 1 .00 .05 .20 .050 300 N N 10 70 15 83C331A 44 2 16 71 1O 33 1.50 .02 .20 .015 300 N N 10 <20 20 83C331B 44 2 16 71 10 33 3.00 .05 .05 .050 500 < . 5 N 10 100 10 83C332 44 2 17 71 1O 40 .50 <.02 <-05 .005 300 < .5 N 10 50 10 Rock Samples--continued

Sample B1 -ppm Cd-ppm Co-ppm Cr-ppm Cu-ppm La-ppm Mo -ppm Nb-ppm N1 -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm s s s s s s s s s s s s s

83TM094 N N N N <5 50 <5 70 <5 30 N 10 N 83TM2OO N N N N <5 50 N 20 N 30 <5 < 10 300 83TM2OOA N N N N <5 150 N <20 N 50 <5 < 10 300 83C302A N N N N <5 200 N 50 N 50 <5 15 N 83C302B N N N N <5 200 N 30 N 50 <5 <10 N

83C303 N N N N <5 100 N 1OO N 10 <5 <10 N 83C304 N N N N <5 100 N 100 N 50 N 10 N 83C305A N N N N <5 100 N 10O N 50 <5 15 N 83C306A N N N N <5 50 <5 30 N 10 <5 10 N 83C306B 1O N N N <5 200 100 100 N 1 .000 <5 20 N

83C306E N N N N <5 200 <5 1OO N 100 <5 2O N 83C307A N N N N <5 50 N 50 N < 10 N N N 83C307B < 10 N N N 7 50 N 50 N 100 <5 10 N 83C307D N N N N <5 20 N <20 N 50 N N N 83C308A N N 5 70 20 50 N 50 10 30 10 N N

83C308B N N 50 70 1OO 70 N 20 50 30 15 N 100 83C308C < 10 N N N <5 30 N <20 N 100 N N N 83C309 N N N N <5 50 N 20 N 50 N <10 N 83C310A N N 70 70 30 50 5 20 70 10 20 N 1 ,000 83C310B N N N N <5 100 <5 50 N 30 5 <10 <100

83C311 <10 20 N N 30 100 <5 70 N 500 5 50 150 83C312A 100 2OO N N 5 70 N 50 N 5,000 <5 150 100 83C312B N <20 N N <5 100 N 50 N 150 <5 20 N 83C312C 20 300 N N 10 100 N 100 N 500 <5 2OO 200 83C313 N N N N <5 100 N 50 N 50 N 1O N

83C314A N N N N <5 100 N 100 N 2O N 10 150 83C314B N N N N <5 50 N 5O N 30 N N N 83C315 N N N N <5 50 N 100 N 50 N 10 N 83C316 N N N N <5 50 N 50 N 30 N N N 83C318B <10 N N N <5 50 N 50 N 50 N 2O N

83C319A 15 N N N <5 50 2OO 5O N 50 N 2O N 83C319B <10 N N N <5 2OO N 70 N 30 N 50 N 83C319C 5O N N N <5 2OO 200 50 N 10O N 70 N 83C320 N N N N <5 50 N 200 N 20 N 15 N 83C321 <10 N N N 10 50 50 3O N 20 N N N

83C322 N N N N <5 100 N 70 N 50 N 20 N 83C323 <10 N N N <5 70 N 70 N 70 N 10 N 83C324 N N N N <5 20 N 150 N 50 N 10 N 83C326 N N N N <5 20 N 50 N 30 N 30 N 83C327 N N N N <5 20 N 30 N 50 N N N

83C328 N N N N <5 20 N 30 N 50 N N N 83C330 N N N N <5 1OO N 30 N 50 N 10 N 83C331A N N N N <5 30 N 30 N 50 N 10 N 83C331B <10 N N N 20 100 N 30 N 50 N 150 N 83C332 N N N N <5 50 N 2O N 20 N N N Rock Samples--contInued

Sample Latitude Longl tude Fe-pct . Mg-pct. Ca-pct . T1-pct. Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s

83C333A 44 2 5 71 11 1O 2.00 <.O2 .05 .O5O 3OO N N 1O <20 15 83C333B 44 2 5 71 11 10 .50 <.02 .05 .005 200 <.5 N 10 <20 10 83C333C 44 2 5 71 11 10 1 .OO <.O2 .05 .O1O 2OO <.5 N 10 1OO 10 83C334 44 2 2 71 11 15 2.0O .05 .05 .070 5OO N N 1O <20 10 83C337 44 8 56 71 10 54 2.OO . 10 .50 .2OO 1 ,5OO N N 1O 3OO 10

83C338 44 7 18 71 7 49 2.OO .03 .20 .050 30O N N 10 150 10 83C339A 44 7 23 71 7 47 2.0O .03 .30 .O5O 30O N N 10 150 10 83C339B 44 7 23 71 7 47 2.00 .02 .20 -O50 200 N N 10 1OO 1O 83C34O 44 9 48 71 21 33 2.OO 1.OO 1 .OO . 1OO 5OO N N 1O 20 10 83C342 44 11 41 71 20 27 15.OO 3.0O 5.OO > 1 . OOO 2.0OO <.5 N 15 2OO 2

83C343 44 11 25 71 2O 45 1 .50 .20 1 .OO .070 2OO <.5 N 20 2OO 5 83C344 44 10 44 71 21 9 7.OO 1.50 .70 .700 2.0OO N N >2,OOO 3OO 10 83C345A 44 1O 47 71 21 5 15.0O 3.OO 2.OO 1.OOO 3,000 N N 50 150 7 83C345B 44 10 47 71 21 5 15.00 5.OO 2.0O 1 .OOO 3.OOO N N 20 150 7 83C345C 44 10 47 71 21 5 15.00 5.OO 3.0O 1 .OOO 3,000 N N 1O 5OO 3

83C346 44 1 5 71 29 4O 1 .50 .05 .30 .O5O 3OO N N 1O 1OO 10 OJ 83C347 44 1 9 71 29 15 2.00 <.O2 .20 .O7O 3OO N N 1O 1OO 10 0 83C347A 44 1 9 71 29 15 1 -OO .05 <-05 .020 10O N N 10 20 1O 83C347V 44 1 9 71 29 15 2.OO .02 <.05 .050 3OO N N 1O 1OO 10 83C349 44 12 27 71 26 43 2.OO .05 .70 . 100 1 ,OOO N N <10 2OO 1O

83C35OA 44 12 34 71 26 46 15.OO 1 .50 3.OO .500 2.OOO N N 10 5OO 7 83C35OB 44 12 34 71 26 46 1O.OO 1 .50 7.00 .300 2, OOO .5 N 1O 70 5 83C351 44 12 38 71 27 24 15.OO .20 <.05 .020 3OO N N 5O 1OO 200 83C352 44 12 37 71 27 16 1 .50 .50 1 .OO -O2O 500 <.5 N 10 1OO 1OO 83C354A 44 12 36 71 28 7 .20 <.02 <.05 .O1O 1OO N N <1O 50 7

83C354B 44 12 36 71 28 7 1.50 .02 .50 .030 3OO N N 1O 100 7O 83C355A 44 3 52 71 1 1 48 1 .50 <.O2 .05 .030 3OO 5.O N 10 70 20 83C355B 44 3 52 71 11 48 2.0O <.O2 . 10 .O3O 3OO N N 1O 100 10 83C356A 44 3 15 71 13 15 5.0O .20 .05 .3OO 1.5OO <.5 2OO <1O 50 50 83C356B 44 3 15 71 13 15 10.00 . 10 <.O5 .300 2,OOO .5 N <10 50 70

83C361 44 13 4 71 3 53 10.OO .50 1 .OO .5OO 2.OOO N N 1O 2OO 5 83C362 44 13 52 71 4 42 1 .OO <.O2 <.O5 .O1O 3OO <.5 N 10 <20 1O 83C363 44 13 53 71 4 3O 1 .50 <.O2 <.05 .O1O 3OO <.5 N 1O <20 10 83C364A 44 14 9 71 4 3 1 .OO <.02 <.O5 -O1O 3OO N N 10 <20 1O 83C364B 44 14 9 71 4 3 2.00 .20 .05 . 100 5OO N N 1O 150 50 83C365 44 14 8 71 3 57 .50 <.02 <.O5 .OO5 2OO N N <1O <20 10 83C366 44 14 8 71 3 50 1.00 <.O2 <.O5 .010 3OO N N 10 <20 1O 83C367 44 32 35 71 2O 49 3.00 .50 . 1O .200 7OO N N 1O 200 7 83C369 44 32 31 71 2O 48 2.OO .30 .20 -20O 50O N N 1O 200 10 83C37O 44 32 26 71 20 50 1 .OO .05 .05 .O2O 2OO N N <1O 70 20

83C371 44 32 22 71 20 48 2.OO .20 .05 . 100 50O <.5 N <10 1OO 7 83C374A 44 41 27 71 32 3 3.OO .50 .20 .2OO 5OO N N 10 5OO 10 83C375 44 41 23 71 32 4 1 .OO . 1O .20 .050 7OO N N 10 150 1O 83C376 44 41 21 71 32 5 20.0O 2.0O .70 1 .OOO 3OO N N 10 2OO 10 83C377A 44 41 21 71 32 5 1O.OO 2.00 .70 .5OO 1,000 1 .5 N 10 150 5 Rock Samples--continued

Sample Bl-ppm Cd-ppm Co-ppm Cr-ppm Cu-ppm La-ppm Mo-ppm Nb-ppm Ni -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm s s s s s s s s s S s s s

83C333A N N N N <5 100 N 1OO N 50 N 15 N 83C333B <10 N N N <5 20 N 5O N 1OO N 1O N 83C333C N N N N <5 5O N 2O N 3O N <1O N 83C334 N N N N <5 70 N 150 N 7O N 1O N 83C337 N N N N <5 50 N 5O N 2O 5 N N

83C338 N N N N <5 7O N 50 N 30 <5 1O N 83C339A N N N N <5 7O N 5O N 5O N 1O N 83C339B N N N N <5 1OO N 5O N 5O N 1O N 83C34O N N N N <5 1OO N 2OO N 30 <5 15 N 83C342 N N 5O N 30 5O <5 5O 10 2O 2O N 1 ,OOO

83C343 N N <5 2O 30 5O N 2O 5 5O <5 <1O 1OO 83C344 N N 3O 10O 15O 10O N 2O 70 3O 2O 1OO 1OO 83C345A N N 7O 2OO 1OO 1OO N 5O 2OO 30 2O 1O 3OO 83C345B N N 7O 2OO 1OO 5O <5 50 2OO 3O 2O <1O 3OO 83C345C N N 70 200 70 5O <5 3O 3OO 3O 2O <10 5OO

83C346 N N N N <5 5O N 7O <5 5O N <1O N 83C347 N N N N N 150 N 7O N 5O N 2O N 83C347A N N N N N 5O N 70 N 2O N <1O N 83C347V N N N N N 2OO N 1OO N 50 N 15 N 83C349 N N N N N 1OO N 7O N 5O 5 2O <1OO

83C35OA N N 10 N 5 15O N 7O N 5O 2O 10 3OO 83C35OB N N 1O 7O N 5O N 2O 2O 2O 1O 15O 2OO 83C351 N N N N N 5O N 5O N 3O 5 2OO <1OO 83C352 <10 N N N N 70 N 70 N 7O N 2O 2OO 83C354A N N N N <5 <2O N 2O N 1O N N N

83C354B N N N N 5 1OO N 50 1O 5O N 3O N 83C355A 10 N N N N 100 N 70 <5 5OO N 1O N 83C355B N N N N 5 1OO N 7O N 5O N 1O N 83C356A N N N N <5 1OO N 2OO N 5O 5 15 N 83C356B N N N N <5 20O 1O 1OO N 5O 5 15 N

83C361 N N N N 20 200 15 1OO N 20 1O 1O N 83C362 N N N N <5 2O N 1OO N 5O N 3O N 83C363 N N N N <5 2O N 1OO N 5O N 50 N 83C364A N N N N <5 30 N 7O N 3O N 2O N 83C364B N N N N <5 1OO N 5O N 3O <5 2O N

83C365 N N N N <5 100 N 1OO N 3O N 3O N 83C366 N N N N <5 <20 N 5O N 3O N 2O N 83C367 N N N N <5 <2O N 5O N 3O <5 1O N 83C369 N N N N <5 <2O N 5O N 3O <5 1O N 83C370 N N N N <5 <2O N 5O N 3O N <1O N

83C371 N N N N <5 <2O N 7O N 5O N <1O N ' N 83C374A N N N <5 50 N 5O 10 5O 5 <1O 20O 83C375 N N N N <5 50 1O 1OO 20 2O N 1O 1OO 83C376 N N 5O 2O 1OO 7O 5O 1OO 1OO 5O 2O 15 2OO 83C377A N N 200 5O 1 ,5OO 50 <5 20 5O 5O 15 2O 2OO Rock Samples--continued The latitude and longitude for 83C378 through 83C427 are on the following nage. Sample V-ppm Y-ppm Zn-ppm Zr-ppm Sn-ppm Sample V-ppm Y-ppm Zn-ppm Zr-ppm Sn-ppm s s s s aa s s s s aa

83C333A 10 70 200 3OO 5 83C378 <10 50 <200 100 4 83C333B 10 50 <200 <10 15 83C379 <10 50 <200 150 10 83C333C 10 10 <2OO 150 3 83C380 <10 30 <200 100 8 83C334 10 50 500 500 7 83C381 10 50 500 300 3 83C337 10 20 5OO 2OO 5 83C384 10 50 500 300 4 83C338 10 50 2OO 200 N 83C385 <10 50 500 300 5 83C339A 10 50 2OO 3OO 5 83C386A <10 50 500 300 5 83C339B 10 50 2OO 300 3^ 83C387A <10 50 2OO 300 3 83C340 10 7O 5OO 700 3 83C390A 50 50 <200 500 N 83C342 300 30 500 200 2 83C390B 10 20 <2OO 200 4 83C343 20 10 <200 200 2 83C393 <10 10 <200 100 N 83C344 2OO 50 500 300 <2 83C394 10 <10 <200 150 <2 83C345A 20O 50 5OO 200 <2 83C395 <10 <10 <200 70 2 83C345B 200 20 500 150 2 83C396 <10 10 <200 50 3 83C345C 20O 30 700 100 N 83C398 30 10 <200 100 N 83C346 10 70 300 300 2 83C399 100 20 500 200 N 83C347 <10 70 <200 300 5 83C400 150 50 <200 200 N 83C347A <10 50 200 300 GO 3 83C401 50 <10 <200 50 N ro 83C347V <10 70 20O 300 4 83C402 20 <10 <200 20 N 83C349 <10 50 500 50O 4 83C403 70 50 500 300 <2 83C350A 20 50 700 700 4 83C405 70 50 500 3OO <2 83C350B 50 3O 7OO 200 6 83C406A 10 50 <200 100 2 83C351 10 1O 200 100 8 83C407 50 70 500 300 <2 83C352 10 70 500 200 4 83C409 <10 20 <200 300 2 83C354A <10 10 N <10 4 83C410 20 10 <200 200 N 83C354B 10 50 <200 300 12 <10 <200 83C355A <10 83C411 70 500 8 50 500 300 5 83C413 50 <200 150 <2 83C355B <10 70 500 300 6 30 83C356A 83C414 10 10 200 200 N 10 50 1,000 1 ,000 3 <10 <10 <200 83C356B <10 50 1.OOO 1.OOO 4 83C415A 70 5 83C415B 10 50 200 200 3 83C361 <10 50 500 <2 1.OOO. <200 83C362 <10 <10 <2OO 100 6 83C417A 10 70 200 N 83C363 <10 10 <200 150 6 83C417B 10 70 300 200 5 83C364A <10 <10 <200 1OO 7 83C417C 15 70 300 150 <2 83C364B <10 20 200 100 2 83C417D 15 70 200 100 2 83C419A 15 30 200 20 <2 83C365 <10 N <200 N 9 83C366 <10 N <20O 100 7 83C419B 10 50 <200 150 8 83C367 <10 <10 <200 100 3 83C420 30 70 500 300 14 83C369 <1O 10 <200 200 3 83C421 10 50 <200 200 <2 83C370 <10 10 N 100 4 83C422A 10 <10 <200 100 60 83C422B 10 10 <20O 100 N 83C371 <1O 10 N 100 3 83C374A 20 <10 N 5OO 3 83C424B <10 20 <200 100 <2 83C375 10 50 N 150 4 83C425 <10 70 500 1 ,OOO 6 83C376 200 70 200 150 3 83C426A 15 <10 <200 200 2 83C377A 100 20 200 200 4 83C426B 10 10 <200 200 2 83C427 15 <10 <20O 50 <2 Rock Samples--continued

Sample Latitude Longitude Fe-pct . Mg-pct . Ca-pct . T1-pct. Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s

83C378 44 1 9 71 29 15 1.00 .02 . 10 .O3O 300 N N <10 10O 10 83C379 44 12 36 71 28 7 1 .OO .05 .20 .050 200 N N 10 1OO 1O 83C380 44 14 8 71 3 5O 1.00 .02 .05 .010 300 N N 10 <2O 10 83C381 44 5 15 71 6 30 10.00 1 .00 1.0O 1.000 5,000 N N 10 2,000 5 83C384 44 5 23 71 6 32 5.OO .05 .07 .3OO 2.OOO N N 10 15O 7

83C385 44 9 54 71 7 59 1 .50 <.O2 .05 . 1OO 300 N N 10 20 10 83C386A 44 5 0 71 6 30 5.00 .05 .05 .200 500 N N < 10 100 10 83C387A 44 5 5 71 6 3O 2.00 .02 .05 .050 300 N N < 10 100 7 83C39OA 44 41 19 71 33 17 2.OO .20 . 10 .500 1,000 < . 5 N < 10 5O 5 83C390B 44 41 19 71 33 17 1 .50 .03 .05 .O5O 150 <.5 N < 10 100 15

83C393 44 43 4 71 33 5 1.50 <.O2 .05 .O2O 150 <.5 N <10 <20 15 83C394 44 43 4 71 33 9 1.00 <.O2 .05 .O2O 100 N N 10 3O 1O 83C395 44 43 4 71 33 12 .70 <.O2 <.05 .020 200 N N < 10 20 10 83C396 44 43 0 71 33 28 2.00 .03 . 10 .O3O 7OO N N < 10 5O 7 83C398 44 2 16 71 48 20 1.50 .50 . 1O . 1OO 200 <.5 N >2,OOO 70 200

83C399 44 2 16 71 48 20 7.00 2.00 .05 .500 300 N N >2,OOO 20 10 83C400 44 2 10 71 48 21 7.00 2.00 .07 .500 700 N N 200 500 2 83C401 44 2 10 71 48 23 1 .OO .30 .50 .O7O 150 N N 1 ,OOO 100 2 83C402 44 2 8 71 48 24 1 .OO .30 .50 .050 1OO N N >2,OOO 1OO 2 83C403 44 2 8 71 48 27 15. OO 2.OO 2.00 .700 2,000 N N 5O 500 3

83C405 44 13 17 71 30 45 10.00 2.00 1.50 .7OO 1,000 N N 10 5OO 3 83C4O6A 44 13 4 71 30 55 2.OO .02 .05 .020 2OO N N 10 <2O 1OO 83C407 44 13 3 71 31 0 3.00 1.00 .30 .500 500 < . 5 N 20 200 2O 83C4O9 44 8 20 71 1 39 2.00 .20 .30 . 15O 500 N N 10 1OO 5 83C410 44 8 20 71 1 34 1 .50 .02 .05 . 150 300 N N 10 100 5

83C411 44 8 22 71 1 20 3.OO .02 .07 . 150 300 N N <10 50 7 83C413 44 6 37 7153 1.OO <.02 .05 .010 100 N N 20 <20 10 83C414 44 6 41 71 4 41 1.50 <.02 <.05 .010 100 N N 10 <20 10 83C415A 44 6 40 71 4 37 .20 <.02 <.05 .010 50 N N < 10 20 5 83C415B 44 6 40 71 4 37 1.00 <.02 <.05 .010 200 N N < 10 <2O 10

83C417A 44 5 43 71 25 35 1.50 <.02 .30 .O2O 200 N N <10 70 20 83C417B 44 5 43 71 25 35 1.50 <.O2 .20 .020 3OO N N 10 <2O 10 83C417C 44 5 43 71 25 35 1.50 <.02 . 10 .020 2OO N N 10 20 10 83C417D 44 5 43 71 25 35 2.OO <-02 . 10 .O2O 3OO N N 10 1OO 1O 83C419A 44 5 44 71 25 46 2.OO <.O2 .05 .010 2OO <.5 N 10 20 500

83C419B 44 5 44 71 25 46 2.00 <.O2 . 10 .020 20O N N <10 100 10 83C42O 44 5 44 71 25 49 15.00 1 .OO 1 .OO .3OO 1 ,5OO N N 20 200 10 83C421 44 38 44 71 24 40 2.00 . 15 .30 .050 5OO N N 10 1OO 1O 83C422A 44 38 40 71 24 39 1.00 <.02 <.05 .010 500 N N 10 N 10 83C422B 44 38 40 71 24 39 1.50 1.00 . 10 .050 500 N N 10 1OO 10

83C424B 43 57 18 71 21 4 1 .OO .02 .05 .050 1OO N N 10 50 1O 83C425 43 56 41 71 20 3O 2.00 <.O2 .05 .050 500 N N < 10 <20 20 <.02 <.O5 <2O 83C426A 43 56 57 71 20 16 1.OO '.05 .010 200 N N 10 10 83C426B 43 56 57 71 20 16 1.OO <.O2 .070 500 N N 10 20 1O 83C427 43 26 29 71 19 52 1 .50 .50 .50 . 100 200 N N 10 100 10 Rock Samples--contInued

Sample B1-ppm Cd-ppm Co-ppm Cr-ppm Cu-ppm La-ppm Mo-ppm Nb-ppm Ni -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm s s s s s s s s s s s s s

83C378 N N N N <5 100 N 50 10 30 N <10 N 83C379 N N N N <5 10O N 50 5 30 N 20 N 83C380 N N N N <5 50 N 70 N 3O N 2O N 83C381 N N <5 N <5 70 N 50 <5 30 20 N 500 83C384 N N N N 7 70 <5 50 2O 3O 5 15 1OO

83C385 N N N N <5 70 N 5O N 20 N 10 N 83C386A N N N N <5 70 N 1OO 1O 50 5 < 1O N 83C387A N N N N <5 1OO N 70 N 3O <5 N N 83C39OA N N 2O 20 10O 70 N 2O 15 2O 7 N N 83C39OB N N N N <5 3O <5 15O 15 10O N N <100

83C393 N N N N <5 <2O 1O 15O N 3O N N N 83C394 N N N N <5 <2O 10 50 10 20 N N N 83C395 <1O N N N <5 <20 <5 7O N 20 N 1O N 83C396 N N N 10 <5 30 15 50 20 30 N N N 83C398 N N <5 N 10 2O <5 50 15 30 5 150 100

83C399 <10 N 50 100 7 50 N 2O 70 20 2O 50 15O 83C4OO N N 5O 100 30 5O N 20 70 50 20 N 1OO 83C4O1 N N <5 N 5 20 5 <2O 50 50 5 N 1OO 83C402 N N N N <5 20 10 <20 50 30 10 N 1OO 83C4O3 N N 10 N <5 50 N 30 50 15 10 N 2OO

83C4O5 N N 20 N 5 5O N 30 20 20 20 N 300 83C406A < 10 N N N <5 50 5 100 10 50 <5 < 1O N 83C4O7 < 10 N 10 10O 10 50 N 50 50 70 15 50 <100 83C4O9 N N N N <5 7O N 20 5 50 5 10 N 83C410 N N N N <5 50 10 3O 20 20 5 N N

83C41 1 N N N N <5 100 N 1OO N 50 <5 30 N 83C413 N N N N <5 5O 2O 50 50 30 N 1O N 83C414 N N N N <5 5O N 50 5 30 N 10 N 83C415A N N N N <5 50 <5 50 <5 <1O N 15 N 83C415B N N N N <5 5O N 50 <5 5O N 10 N

83C417A N N N N <5 70 N 5O 5 50 N <10 N 83C417B N N N N <5 50 <5 100 5 50 N 50 N 83C417C N N N N <5 50 <5 100 10 50 N 10 N 83C417D N N N N <5 150 10 5O 5O 50 N 15 N 83C419A 5O N N N 10O 5O 2OO 50 30 50 N 20 N

83C419B N N N N 3O 70 <5 5O 10 70 N 50 N 83C42O N N N N 5 1OO 20 50 3O 70 10 150 <100 83C421 N N N N <5 50 N 50 5 20 <5 10 N 83C422A N N N N <5 50 N 50 <5 3O N 1OO N 83C422B N N N N <5 5O 1O 30 10 20 N <10 <1OO

83C424B N N N N <5 70 N 20 <5 50 N <10 N 83C425 N N N N <5 20O N 2OO <5 5O N 15 N 83C426A N N N N <5 50 5 3O 50 3O N N N 83C426B N N N N <5 5O <5 5O 7 30 N N N 83C427 N N N N <5 20 N 2O 1O 5O 5 N 2OO Rock Samples--contInued

Sample Latitude Longitude Fe-pct. Mg-pct . Ca-pct . Tl-pct. Mn-ppm Ag-ppm As-ppm B-ppm Ba-ppm Be-ppm s s s s s s s s s s ' N 83C428 43 57 13 71 19 55 1 .00 <.02 .20 .020 200 N 10 <20 10 83C429 43 57 14 71 19 55 1 .00 <.02 <.05 .020 100 < . 5 N 10 <20 10 83C430 44 4 47 71 34 14 1 .00 <.02 <.05 .005 100 N N 10 20 10 83C431 44 4 47 71 34 14 1 .00 <.02 <.05 .002 300 N N 10 <20 10 83C432 44 4 45 71 34 2 2 .00 .02 .20 .050 3OO N N 10 100 10

83C433 43 56 41 71 20 30 5 .00 <.02 . 10 .030 1,500 N N 10 N 10 83C437B 44 9 7 71 17 51 1 .50 <.O2 .05 .015 200 N N 10 50 10 83C44O 44 9 12 71 18 33 5 .00 -.02 .50 .070 2.0OO N N 10 50 10 83C442 44 46 33 71 17 14 .50 .20 . 10 .015 300 N N 10 150 15 83C443 44 46 52 71 17 2O 1 .00 . 10 . 10 .200 300 N N 10 100 10

83C444 44 46 44 71 18 3O 1.OO <.02 <.05 .010 200 10 10

Sample B1-ppm Cd-ppm Co-ppm Cr-ppm Cu-ppm La-ppm Mo-ppm Nb-ppm N1 -ppm Pb-ppm Sc-ppm Sn-ppm Sr-ppm 8 8 8 8 8 8 8 B 8 s B s s

83C428 N N N N 10 70 N 20 10 30 N N N 83C429 N N N N <5 50 50 5O 10 30 N 10 N 83C430 N N N N <5 200 10 50 50 50 N <10 N 83C431 N N N N <5 50 N 50 5 50 N 20 N 83C432 N N N N <5 50 N 50 5 50 <5 10 N

83C433 N N N N <5 200 <5 20 5 100 N 20 N 83C437B N N N N <5 100 <5 70 5 50 N N N 83C440 N N N N 30 200 N 70 N 100 <5 50 N 83C442 N N N N <5 50 N <20 N 50 N N <100 83C443 N N N N 5 50 N 50 N 20 N <10 <100

83C444 <5 20 50 50 10

Sampl* V-ppw Y-ppm Zn-ppm Zr-ppm Sn-ppm 8 8 8 s aa

83C428 20 20 <2OO 150 N 83C429 10 20 <2OO 300 <2 83C430 20 70 <2OO 150 2 83C431 10 50 <2OO 150 N 83C432 10 70 2OO 1OO 4

83C433 <10 70 5OO 1.OOO 2 83C437B 10 50 <2OO 2OO 2 83C440 <10 70 7OO 2OO 10 83C442 <10 <10 <2OO 50 3 83C443 <10 15 <2OO 150 N

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Issliiliisli/i |: Table 3. Analyses of rock samples by EDS-XRF. Analyst: J. R. Eckert

Sn Ba Rb Sr Y Zr Nb Mo Cu Zn Sample Latitude Longitude (10) (17)' (2) (large error (12) (10) (4) (12) (8) (20) below 60)

83TM051B 43°55'34 71°30 45« 17 207 406 51 56 198 62 L 10 , 73 83TM052C 43°55'29 71°30 34" 12 519 420 83 53 184 55 L L 56 83TM085B 44°04'45 71°34 '02" 18 237 421 39 88 289 124 L 12 115 83TM086 44°04'45 71°34 '05" 18 40 486 11 30 49 86 . L 9 40 83TM087 44°04'4b 71°34 '09" 17 36 284 17 75 122 66 L 18 L

83TM087A 44°04'46 71°34 09" 17 134 264 28 55 200 83 L L 48

83TM088A 44°04'47 71°34 14" 21 18 703 8 78 138 41 L 12 55 83C312 44°02'56 71°16 08" 77 69 247 37 107 258 148 L 10 352

83C354B 44°12'36 71°28 07" 31 195 469 58 73 266 106 L L 45

83C417A 44°05'43 71°25 35" 17 180 472 27 82 277 127 L L 72 83C417B 44°05'43 71°25 '35" 72 39 676 23 142 286 279 L 19 121 83C417C 44°05'43 71°25 35" 19 35 659 13 127 281 238 L 15 109

83C419B 44°05'44 71°25 46" 38 155 467 27 76 174 115 79 15 87 83C419B2 44°05'44 71°25 '46" 43 160 500 27 76 181 117 38 33 94 83C419C 44°05'44 71°25 46" *> 20 106 440 20 57 153 136 L 13 37 83C421 44 C 38'44 71°24 '40M 11 253 301 59 41 236 86 L L 26 83C450 44°04'19 71°09 '40" 15 259 357 40 58 314 88 L 8 80 83C460A 44°00'41 71°11 '24" 15 306 309 47 75 348 91 L 9 104 24" 83C460C 44°00'41 71°11 15 26 564 12 54 95 68 L 17 L 83C460D 44°00'41 71°11 24" 17 300 329 56 80 422 98 L 10 115 '28 M 71°40 14 51 260 29 73 202 129 L 10 43

83C500A2 44°08'11 71°40 28" 15 67 241 33 65 232 109 L 14 59 28" 83C500B 44 008'11 71°40 12 57 256 30 75 296 121 L 10 45 References Cited

Canney, F. C., Howd, F. H., Domenico, J. A., and Nakagawa, H. M., in

press, Geochemical survey of the Wilderness and Roadless areas of the

White Mountain National Forest, New Hampshire: U.S. Geological Survey

Miscellaneous Field Studies Map MF-1594-C.

Domenico, J. A., Howd, F. H., Hal1-Santala, P. A., and Gerstel, W. J., 1982,

Spectrographic analyses and statistical summaries of nonmagnetic-heavy-

mineral-concentrate samples from north-central Neww Hampshire: U.S.

Geological Survey Open File Report 82-886, 33 p.

Grimes, D. J., and Marranzino, A. P., 1968, Direct-current arc and alternating-

current spark emission spectrographic field methods for the semi quantitative

analysis of geologic materials: U.S. Geological Survey Circular 591, 6 p.

Moench, R. H., Canney, F. C., and Gazdik, G. C., 1984, Mineral Resource

Potential Map of the wilderness and roadless areas of White Mountain

National Forest, New Hampshire: U.S. Geological Survey MF-1594 B.

Motooka, J. M., and Grimes, D. J., 1976, Analytical precision of one-sixth

order semi quantitative spectrographic analysis: U.S. Geological Survey

Circular 738, 25 p.

Sabin, A. E., Clay, M. M., and Thompson, R. M., 1982, Mineral investigation of

Pemigewassett RARE II Further Planning Area, Grafton and Carrol! Counties,

New Hampshire: U.S. Bureau of Mines Open-File Report MLA 95-82, 16 p.

Welsch, E. P., and Chao, T. T., 1976, Determination of trace amounts of

tin in geological materals by atomic absorption spectrometry: Analytica

Chimica Acta, v. 82, p. 337-342.

38